simstack.io - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status

simstack.io

DNSSEC⚠️ Not signed
A76.76.21.21🇺🇸 Amazon76.76.21.0/24 EC2 Prefix
NSjack.ns.cloudflare.com
A2606:4700:58::adf5:3b79🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjack.ns.cloudflare.com
A2803:f800:50::6ca2:c179🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRjack.ns.cloudflare.com
A2a06:98c1:50::ac40:2179🇺🇸 Cloudflare2a06:98c1:50::/45
PTRjack.ns.cloudflare.com
A108.162.193.121🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjack.ns.cloudflare.com
A172.64.33.121🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjack.ns.cloudflare.com
A173.245.59.121🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjack.ns.cloudflare.com
NSpat.ns.cloudflare.com
A2606:4700:50::adf5:3a8b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpat.ns.cloudflare.com
A2803:f800:50::6ca2:c08b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRpat.ns.cloudflare.com
A2a06:98c1:50::ac40:208b🇺🇸 Cloudflare2a06:98c1:50::/45
PTRpat.ns.cloudflare.com
A108.162.192.139🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpat.ns.cloudflare.com
A172.64.32.139🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpat.ns.cloudflare.com
A173.245.58.139🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpat.ns.cloudflare.com
MXaspmx.l.google.com
A2607:f8b0:4004:c1d::1a🇺🇸 Google2607:f8b0:4004::/48
PTRww-in-f26.1e100.net
A142.251.111.27🇺🇸 Google142.251.111.0/24
PTRbk-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2800:3f0:4003:c14::1b🇨🇱 Google2800:3f0:4003::/48
A192.178.234.26🇺🇸 Google192.178.0.0/15
PTRncsclj-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.net
A172.253.116.27🇺🇸 Google172.253.116.0/24
PTRdj-in-f27.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4009:c0f::1a🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f26.1e100.net
A192.178.223.27🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f27.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:400c:c23::1b🇧🇪 Google2a00:1450:400c::/48
PTRyubrupd-in-f27.1e100.net
A172.253.157.27🇺🇸 Google172.253.0.0/16
PTRyubrupd-in-f27.1e100.net
TXTgoogle-site-verification=HzdcK-7G3YPkNDC_aWnu5saSIa1tW6Vb27RZOtSICq4
TXTgoogle-site-verification=h14_fOhoytrpfJX8LQhOUlAT8xu7R7IkSft82bnoX3c
TXTslack-domain-verification=oq6dRGzVsu30agzMSzjNnlD4ZdBGPnZubuQSCUbQ
TXTv=spf1 include:_spf.google.com -all
SOAjack.ns.cloudflare.comdns@cloudflare.com serial=2410734847

io

DNSSEC🔒 Signed (DS record present)
NSa0.nic.io
NSa2.nic.io
NSb0.nic.io
NSc0.nic.io
SOAa0.nic.iohostmaster@donuts.email serial=1788626176

Same first word

Similar names

Previous names

Next names

DNS History

8 records (8 active, 0 former)

NSjack.ns.cloudflare.compat.ns.cloudflare.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comA76.76.21.21
NSjack.ns.cloudflare.com2026-08-29 → 2026-09-05 · 2 obs
● 2026-08-29 19:35:52
● 2026-09-05 16:52:44
NSpat.ns.cloudflare.com2026-08-29 → 2026-09-05 · 2 obs
● 2026-08-29 19:35:52
● 2026-09-05 16:52:44
MXalt1.aspmx.l.google.com2026-08-29 → 2026-09-05 · 2 obs
● 2026-08-29 19:35:52
● 2026-09-05 16:52:44
MXalt2.aspmx.l.google.com2026-08-29 → 2026-09-05 · 2 obs
● 2026-08-29 19:35:52
● 2026-09-05 16:52:44
MXalt3.aspmx.l.google.com2026-08-29 → 2026-09-05 · 2 obs
● 2026-08-29 19:35:52
● 2026-09-05 16:52:44
MXalt4.aspmx.l.google.com2026-08-29 → 2026-09-05 · 2 obs
● 2026-08-29 19:35:52
● 2026-09-05 16:52:44
MXaspmx.l.google.com2026-08-29 → 2026-09-05 · 2 obs
● 2026-08-29 19:35:52
● 2026-09-05 16:52:44
A76.76.21.212026-08-29 → 2026-09-05 · 2 obs
● 2026-08-29 19:35:52
● 2026-09-05 16:52:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ioc0.nic.io, a2.nic.io, a0.nic.io, b0.nic.io-
simstack.iopat.ns.cloudflare.com, jack.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.193.121

NS records: pat.ns.cloudflare.com, jack.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for simstack.io (unsigned zone)

⏱️ Timing

Total: 634ms | Queries: -

📄 Records

TypeCountSample Data
A176.76.21.21
NS2jack.ns.cloudflare.com, pat.ns.cloudflare.com
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT4google-site-verification=HzdcK-7G3YPkNDC, google-site-verification=h14_fOhoytrpfJX...
SOA1jack.ns.cloudflare.com dns.cloudflare.co

Analysis

IP Addresses

simstack.io points to a single IP number: 76.76.21.21.

Additional host names — carbonsyncanalytics.com, mopany.com, petlifeessentials.com and two others — share IP numbers with simstack.io.

Name Servers

The NS records for simstack.io delegate to jack.ns.cloudflare.com and pat.ns.cloudflare.com.

simstack.io shares its name server setup with other domains, including industry-season-4-episode-6-dear-henry.pages.dev, overwatch-skin-codes.pages.dev, pjmedia.com and two others.

At least some of simstack.io's name servers are shared with other domains, for example abstralexis.workers.dev, telyotorwarenlanzena.buzz, unretrofied.com and two more.

These name servers tend to be used in conjunction with the name servers erin.ns.cloudflare.com.

Host names with 6 IP numbers:

jack.ns.cloudflare.com maps to 108.162.193.121, 172.64.33.121, 173.245.59.121 and 3 additional IP addresses.

pat.ns.cloudflare.com maps to 108.162.192.139, 172.64.32.139, 173.245.58.139 and 3 additional IP addresses.

Mail Servers

Five mail servers handle simstack.io: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

simstack.io shares mail servers — at least in part — with other domains, including onion.se, darlenenavarre.com, wizrocket.net and two others.

These mail servers are frequently used alongside mail servers alt4.aspmx.l.google.com, alt3.aspmx.l.google.com, aspmx2.googlemail.com and 3 other.

Host names with two IP numbers:

The A records for aspmx.l.google.com return 142.251.111.27 and 2607:f8b0:4004:c1d::1a.

The A records for alt1.aspmx.l.google.com return 192.178.234.26 and 2800:3f0:4003:c14::1b.

The A records for alt2.aspmx.l.google.com return 172.253.116.27 and 2a00:1450:400b:c02::1a.

The A records for alt3.aspmx.l.google.com return 192.178.223.27 and 2a00:1450:4009:c0f::1a.

The A records for alt4.aspmx.l.google.com return 172.253.157.27 and 2a00:1450:400c:c23::1b.